Transactinide elements are elements that have atomic numbers greater than the actinides. They have atomic numbers from 104 to 120.
They are all synthetic and radioactive. They range from 104 rutherfordium to 118 oganesson on the periodic table.
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A graphic depiction of a nuclear fusion reaction. Two nuclei fuse into one, emitting a neutron. Reactions that created new elements to this moment were similar, with the only possible difference that several singular neutrons sometimes were released, or none at all.